CN113271411A - Method for viewing panoramic image and playing device - Google Patents

Method for viewing panoramic image and playing device Download PDF

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Publication number
CN113271411A
CN113271411A CN202110415183.3A CN202110415183A CN113271411A CN 113271411 A CN113271411 A CN 113271411A CN 202110415183 A CN202110415183 A CN 202110415183A CN 113271411 A CN113271411 A CN 113271411A
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image
panoramic
icon
target
panoramic image
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CN113271411B (en
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林树森
胡金明
沈靖程
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Shenzhen Pisofttech Technology Co ltd
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Shenzhen Pisofttech Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/63—Control of cameras or camera modules by using electronic viewfinders
    • H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
    • H04N23/632—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
    • G06F16/54—Browsing; Visualisation therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
    • G06F16/58—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • G06F16/5866—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using information manually generated, e.g. tags, keywords, comments, manually generated location and time information
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
    • G06F16/58—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • G06F16/587—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using geographical or spatial information, e.g. location
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/698—Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Databases & Information Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Library & Information Science (AREA)
  • Human Computer Interaction (AREA)
  • User Interface Of Digital Computer (AREA)

Abstract

The embodiment of the invention discloses a method for viewing panoramic images and playing equipment, which are used for facilitating a user to view the panoramic images. The method provided by the embodiment of the invention comprises the following steps: and acquiring a panoramic image and an orientation angle, wherein the panoramic image comprises a target pixel area. And determining a first watching image from the panoramic image, wherein the first watching image is a local part of the panoramic image, and the target pixel area is on the first watching image. The first viewing image is presented in the player window so that the user can view the first viewing image, with the target pixel region being located at the center of the player window. And drawing a compass icon in the player window, wherein the compass icon comprises a central point, a view direction icon and a preset geographical direction icon, and an included angle between the view direction icon and the preset geographical direction icon is equal to an orientation angle. Therefore, in the compass icon, the included angle between the visual field direction icon and the preset geographical direction icon can realize the determination of the specific position of the current visual field direction of the user, and the user can conveniently check the panoramic image.

Description

Method for viewing panoramic image and playing device
Technical Field
The invention relates to the technical field of image viewing, in particular to a method for viewing panoramic images and playing equipment.
Background
A PANORAMIC image (or PANORAMA, english name) generally refers to an image photographed over a normal effective visual angle of both eyes (about 90 degrees horizontally, 70 degrees vertically) or over a visual angle including the residual light of both eyes (about 180 degrees horizontally, 90 degrees vertically), or even over a full scene range of 360 degrees.
When viewing the panoramic image on the device, the panoramic image is often presented through a player window. However, the field of view occupied by the panoramic image is often large, and the size of the player window is limited, which results in that the player window can only show a part of the panoramic image, and then the user can show a different part of the panoramic image on the player window through a moving operation.
In such a scheme, it is not easy for the user to determine the direction of the user's field of view when viewing the image presented in the player window, thereby making it inconvenient for the user to perform viewing operations.
Disclosure of Invention
The embodiment of the invention provides a method for viewing a panoramic image and playing equipment, which are used for facilitating a user to view the panoramic image.
To achieve the purpose, the embodiment of the invention adopts the following technical scheme:
a method of viewing panoramic images, comprising:
acquiring a panoramic image and an orientation angle, wherein the panoramic image is acquired by a panoramic camera, a target lens is arranged on the panoramic camera, the orientation angle is an included angle between the lens orientation direction of the target lens and a preset geographical direction when the panoramic camera acquires the panoramic image, the panoramic image comprises a target pixel area, and the target pixel area is acquired by the target lens in the lens orientation direction;
determining a first viewing image from the panoramic image, wherein the first viewing image is a local part of the panoramic image, and the target pixel area is on the first viewing image;
displaying the first viewing image in a player window, the target pixel region being located at a center of the player window;
drawing a compass icon in the player window, wherein the compass icon comprises a central point, a visual field direction icon and a preset geographical direction icon, the visual field direction icon and the preset geographical direction icon are all from the central point to the outside of the compass icon, an included angle between the visual field direction icon and the preset geographical direction icon is equal to the orientation angle, and the preset geographical direction icon represents the preset geographical direction.
Optionally, after the compass icon is drawn in the player window, the method further includes:
when a rotation instruction is detected, moving the panoramic image in the player window according to a target rotation angle indicated by the rotation instruction, so that the player window displays a second watching image, wherein the second watching image is a local part of the panoramic image;
rotating the sight direction icon on the compass icon by a target sub-angle about the center point such that a direction indicated by the sight direction icon represents a sight direction when viewing the second viewing image.
Optionally, the determining a first viewing image from the panoramic image comprises:
converting the panoramic image into a panoramic spherical image under a three-dimensional coordinate system;
arranging a virtual camera at the center of the panoramic spherical image;
and acquiring a first watching image positioned in the visual field range of the virtual camera from the panoramic spherical image through the virtual camera.
Optionally, when the rotation instruction is detected, moving the panoramic image in the player window according to the target rotation angle indicated by the rotation instruction, so that the player window displays a second viewing image, including:
when a rotation instruction is detected, rotating the virtual camera in the three-dimensional coordinate system according to a target rotation angle indicated by the rotation instruction so as to adjust the image of the panoramic spherical image in the visual field range of the virtual camera;
determining a target sub-angle according to the target rotation angle, wherein the target rotation angle is represented by three attitude angles, the target sub-angle is one of the three attitude angles of the target rotation angle, and the target sub-angle rotates around a target reference axis, and the target reference axis is perpendicular to the optical axis of the virtual camera and the preset geographic direction when the player window displays the first viewing image in the three-dimensional coordinate system;
acquiring a second watching image positioned in the visual field range of the virtual camera from the panoramic spherical image through the virtual camera;
displaying the second viewing image in the player window.
Optionally, the rotation instruction is a drag operation on the panoramic image in the player window.
Optionally, the preset geographic direction is a true north direction;
the orientation angle is recorded on the panoramic image.
Optionally, the compass icon is circular in shape;
the compass icon further comprises a target sector area, the vertex of the target sector area is coincident with the central point, and the arc of the target sector area is positioned on the circumference of the compass icon;
the compass icon further comprises a preset geographic identifier;
the direction pointing to the preset geographical identification from the central point represents the direction indicated by the preset geographical direction icon;
a direction along the center line of the target sector area pointing from the center point to the outside of the compass icon represents the direction indicated by the sight direction icon.
Optionally, the panoramic camera is provided with a magnetometer for identifying the true north direction.
In order to achieve the purpose, the embodiment of the invention also adopts the following technical scheme:
a playback device comprising:
the panoramic image acquisition device comprises an acquisition unit, a processing unit and a display unit, wherein the acquisition unit is used for acquiring a panoramic image and an orientation angle, the panoramic image is acquired by a panoramic camera, a target lens is arranged on the panoramic camera, the orientation angle is an included angle between the lens orientation direction of the target lens and a preset geographic direction when the panoramic camera acquires the panoramic image, the panoramic image comprises a target pixel area, and the target pixel area is acquired by the target lens in the lens orientation direction;
a determining unit, configured to determine, from the panoramic image, a first viewing image, where the first viewing image is a local part of the panoramic image, and the target pixel area is on the first viewing image;
a display unit, configured to display the first viewing image in a player window, where the target pixel region is located at a center of the player window;
the drawing unit is used for drawing compass icons in the player window, the compass icons comprise a central point, field of vision direction icons and preset geographical direction icons, the field of vision direction icons and the preset geographical direction icons are all oriented from the central point to the outside of the compass icons, included angles between the field of vision direction icons and the preset geographical direction icons are equal to the orientation angles, and the preset geographical direction icons represent the preset geographical directions.
Optionally, the playing device further comprises a detection unit and a rotation unit;
the detection unit is used for moving the panoramic image in the player window according to the target rotation angle indicated by the rotation instruction when the rotation instruction is detected, so that the player window displays a second watching image, wherein the second watching image is a local part of the panoramic image;
the rotating unit is used for rotating the visual field direction icon around the central point on the compass icon by a target sub-angle, so that the direction indicated by the visual field direction icon represents the visual field direction when the second watching image is watched.
Optionally, the determining unit includes:
the conversion module is used for converting the panoramic image into a panoramic spherical image under a three-dimensional coordinate system;
the setting module is used for setting a virtual camera at the spherical center of the panoramic spherical image;
and the acquisition module is used for acquiring a first watching image positioned in the visual field range of the virtual camera from the panoramic spherical image through the virtual camera.
Optionally, the detection unit comprises a rotation module and an angle determination module;
the rotating module is used for rotating the virtual camera under the three-dimensional coordinate system according to a target rotation angle indicated by the rotating instruction when the rotating instruction is detected so as to adjust the image of the panoramic spherical image in the visual field range of the virtual camera;
the angle determination module is configured to determine a target sub-angle according to the target rotation angle, where the target rotation angle is represented by three attitude angles, the target sub-angle is one of the three attitude angles of the target rotation angle, and the target sub-angle rotates around a target reference axis, where, in the three-dimensional coordinate system, when the player window displays the first viewing image, the target reference axis is perpendicular to an optical axis of the virtual camera and the preset geographic direction;
the acquisition module is further used for acquiring a second watching image positioned in the visual field range of the virtual camera from the panoramic spherical image through the virtual camera;
the display unit is further configured to display the second viewing image in the player window.
Optionally, the rotation instruction is a drag operation on the panoramic image in the player window.
Optionally, the preset geographic direction is a true north direction;
the orientation angle is recorded on the panoramic image.
Optionally, the compass icon is circular in shape;
the compass icon further comprises a target sector area, the vertex of the target sector area is coincident with the central point, and the arc of the target sector area is positioned on the circumference of the compass icon;
the compass icon further comprises a preset geographic identifier;
the direction pointing to the preset geographical identification from the central point represents the direction indicated by the preset geographical direction icon;
a direction along the center line of the target sector area pointing from the center point to the outside of the compass icon represents the direction indicated by the sight direction icon.
Optionally, the panoramic camera is provided with a magnetometer for identifying the true north direction.
According to the technical scheme, the embodiment of the invention has the following advantages:
in the method for viewing the panoramic image, the panoramic image and the orientation angle are obtained, wherein the panoramic image is acquired by a panoramic camera, a target lens is arranged on the panoramic camera, the orientation angle is an included angle between the lens orientation direction of the target lens and a preset geographical direction when the panoramic image is acquired by the panoramic camera, the panoramic image comprises a target pixel area, and the target pixel area is acquired by the target lens in the lens orientation direction. Then, from the panoramic image, a first view image is determined, the first view image being a local part of the panoramic image, the target pixel area being on the first view image. The first viewing image is presented in the player window so that the user can view the first viewing image, with the target pixel region being located at the center of the player window. Drawing a compass icon in the player window, wherein the compass icon comprises a central point, a view direction icon and a preset geographical direction icon, the view direction icon and the preset geographical direction icon are both the outside of the compass icon pointed from the central point, an included angle between the view direction icon and the preset geographical direction icon is equal to an orientation angle, and the preset geographical direction icon represents a preset geographical direction. Therefore, when the user views the first viewed image, the field of view direction icon reflects the current field of view direction of the user in the compass icon, and the specific position of the current field of view direction of the user can be determined by the included angle between the field of view direction icon and the preset geographical direction icon, so that the user can determine the specific position of the current viewed image in the player window in the panoramic image, and the user can conveniently view the panoramic image.
Drawings
Fig. 1 is a schematic structural diagram of a panoramic camera according to an embodiment of the present invention;
FIG. 2 is a usage scene diagram of a method for viewing a panoramic image according to an embodiment of the present invention;
FIG. 3 is a flowchart of a method for viewing panoramic images according to an embodiment of the present invention;
fig. 4 is a diagram illustrating a display effect of a player window according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a compass icon according to an embodiment of the present invention;
FIG. 6 is a schematic view of the compass icon of FIG. 5 with the view direction icon rotated;
FIG. 7 is a flowchart of a method for viewing panoramic images according to an embodiment of the present invention;
fig. 8 is a schematic plan view of an image acquired by a virtual camera according to an embodiment of the present invention;
fig. 9 is a schematic perspective view of an image acquired by a virtual camera according to an embodiment of the present invention;
FIG. 10 is a diagram illustrating a compass icon according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a playing device according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method for viewing a panoramic image and playing equipment, which are used for facilitating a user to view the panoramic image.
In order to provide a clear understanding of the methods and apparatus to which embodiments of the invention relate, some terms relating to embodiments of the invention are explained below.
1) A panoramic image.
A PANORAMIC image (or PANORAMA, english name) generally refers to an image photographed over a normal effective visual angle of both eyes (about 90 degrees horizontally, 70 degrees vertically) or over a visual angle including the residual light of both eyes (about 180 degrees horizontally, 90 degrees vertically), or even over a full scene range of 360 degrees.
2) A panoramic camera.
The panoramic camera is a camera device and is used for collecting panoramic images. Generally speaking, the panoramic camera is provided with at least two cameras, each camera is used for collecting one image, and the images collected by different cameras on the panoramic camera are spliced to obtain a panoramic image.
As shown in fig. 1, fig. 1 shows a panoramic camera, where four cameras are arranged on the panoramic camera, each camera can collect one image, and the images collected by the four cameras are spliced to obtain a panoramic image.
The method for viewing the panoramic image and the playing device provided by the embodiment of the invention can be applied to electronic devices, such as computers, tablet computers or mobile phones and other electronic devices. For example, fig. 2 is a usage scenario diagram of a method for viewing a panoramic image according to an embodiment of the present invention, and fig. 2 illustrates a computer with a screen, on which a player window 202 is displayed on a screen 201, where the player window 202 can be used to display the panoramic image and a compass icon.
Fig. 3 is a flowchart of a method for viewing a panoramic image according to an embodiment of the present invention. The method of the embodiment shown in FIG. 3 can be applied to an electronic device, such as a computer shown in FIG. 2.
Referring to fig. 3, the method for viewing a panoramic image according to the embodiment of the present invention includes the following steps:
step 301: a panoramic image and an orientation angle are acquired.
The panoramic image is acquired by a panoramic camera, and a target lens is arranged on the panoramic camera. The panoramic camera can be provided with a plurality of lenses, and one lens on the panoramic camera is used as a target lens.
The orientation angle is an included angle between the orientation direction of the lens of the target lens and a preset geographic direction when the panoramic camera collects panoramic images. The lens orientation direction of the objective lens is a direction from the inside of the panoramic camera to the outside of the panoramic camera along the optical axis of the objective lens. The predetermined geographic direction is a geographic direction, such as north, south, and the like, and this is not limited in the embodiments of the present invention.
The panoramic image comprises a target pixel area, and the target pixel area is acquired by a target lens in the direction of the lens orientation. In other words, when the panoramic camera captures a panoramic image, the target lens captures a target pixel area along the optical axis of the target lens.
Step 302: from the panoramic image, a first viewing image is determined.
After the playing device acquires the panoramic image, a first watching image is determined from the panoramic image. The first watching image is a local part of the panoramic image, and the target pixel area is on the first watching image.
Step 303: a first viewing image is presented in a player window.
The playing device displays a player window, and displays the first watching image in the player window so that the user can watch the first watching image. Wherein the target pixel area is located in the center of the player window.
Step 304: a compass icon is drawn in the player window.
As shown in fig. 4, the playback device draws a compass icon 402 in a player window 401.
As shown in fig. 5, the compass icon 402 includes a center point 403, a sight direction icon 404, and a preset geographical direction icon 405. The sight direction icon 404 and the preset geographical direction icon 405 are both pointing from the center point 403 to the outside of the compass icon 402 to achieve a representation of direction. The preset geographical direction icon 405 represents a preset geographical direction. The angle between the sight-line direction icon 404 and the preset geographical direction icon 405 is equal to the orientation angle 406. At this time, the view direction icon 404 may indicate a lens orientation direction of the target lens and also indicate a view direction of the user viewing the first viewing image.
Therefore, when the user views the first viewing image, the field of view direction icon reflects the current field of view direction of the user in the compass icon, the preset geographical direction icon can be used for carrying out position positioning due to the fact that the preset geographical direction icon represents the preset geographical direction, therefore, the specific geographical direction of the field of view direction when the user views the player window can be determined through the included angle between the field of view direction icon and the preset geographical direction icon, the user can also determine the relative position of the currently viewed first viewing image in the panoramic image by viewing the compass icon, and therefore the user can conveniently view the panoramic image.
Optionally, after step 304, the method for viewing the panoramic image according to the embodiment of the present invention further includes step 305 and step 306 in order to dynamically display the view direction of the compass icon.
Step 305: and when the rotation instruction is detected, moving the panoramic image in the player window according to the target rotation angle indicated by the rotation instruction.
When the rotation instruction is detected, the playing device moves the panoramic image in the player window according to the target rotation angle indicated by the rotation instruction, so that the player window displays a second watching image, the second watching image is a part of the panoramic image, and the first watching image and the second watching image are different. In this way, the user may view different portions of the panoramic image.
Step 306: and on the compass icon, rotating the view direction icon by a target sub-angle around the central point.
The panoramic image displayed by the player window is locally different, the view direction when the image displayed by the player window is watched is often changed relative to a preset geographical direction, and in order to display the currently watched view direction in real time, the view direction icon is rotated around a central point on the compass icon by a target angle, so that the direction indicated by the view direction icon represents the view direction when a second watched image is watched.
As shown in fig. 5, fig. 5 shows an example of a compass icon 402 when the first-view image is presented in the player window. The panoramic image is moved in the player window so that the player window reveals a second view image, turning a view direction icon 404 a target sub-angle around a center point 403 on a compass icon 402, an example of which is shown in fig. 6.
It should be understood that, in the embodiment of the present invention, the visual field direction indicates a direction in which the line of sight of the user is formed when the user looks at a part of the panoramic image at the center of the panoramic image, representing the panoramic image in the three-dimensional coordinate system. In the compass icon, the visual field direction icon represents the visual field direction. Because the preset geographical direction icon represents the preset geographical direction, the included angle between the view direction icon and the preset geographical direction icon reflects the actual geographical direction of the view direction. For example, the visual field direction of the user viewing the first viewing image represents a direction in which the line of sight of the user is formed when the user looks at the first viewing image at the center of the panoramic image. The visual field direction when viewing the second viewing image represents a direction in which the user's line of sight is formed when the user looks at the second viewing image at the center of the panoramic image.
In summary, in the method for viewing a panoramic image according to the embodiment of the present invention, a panoramic image and an orientation angle are obtained, where the panoramic image is acquired by a panoramic camera, the panoramic camera is provided with a target lens, the orientation angle is an included angle between a lens orientation direction of the target lens and a preset geographic direction when the panoramic image is acquired by the panoramic camera, the panoramic image includes a target pixel area, and the target pixel area is acquired by the target lens in the lens orientation direction. Then, from the panoramic image, a first view image is determined, the first view image being a local part of the panoramic image, the target pixel area being on the first view image. The first viewing image is presented in the player window so that the user can view the first viewing image, with the target pixel region being located at the center of the player window. Drawing a compass icon in the player window, wherein the compass icon comprises a central point, a view direction icon and a preset geographical direction icon, the view direction icon and the preset geographical direction icon are both the outside of the compass icon pointed from the central point, an included angle between the view direction icon and the preset geographical direction icon is equal to an orientation angle, and the preset geographical direction icon represents a preset geographical direction. Therefore, when the user views the first viewed image, the field of view direction icon reflects the current field of view direction of the user in the compass icon, and the specific position of the current field of view direction of the user can be determined by the included angle between the field of view direction icon and the preset geographical direction icon, so that the user can determine the specific position of the current viewed image in the player window in the panoramic image, and the user can conveniently view the panoramic image.
Fig. 7 is a flowchart of a method for viewing a panoramic image according to an embodiment of the present invention. The method of the embodiment shown in fig. 7 can be implemented based on the method of the embodiment shown in fig. 3. The method of the embodiment shown in FIG. 7 can be applied to an electronic device, such as a computer shown in FIG. 2.
The method of viewing a panoramic image according to the embodiment shown in fig. 7 will be exemplarily described below, taking the playback apparatus of the embodiment shown in fig. 2 and taking images in which the panoramic image is in a range of 360 degrees left and right and 360 degrees up and down as examples.
Referring to fig. 7, the method for viewing a panoramic image according to the embodiment of the present invention includes the following steps:
step 701: a panoramic image and an orientation angle are acquired.
The playing device acquires the panoramic image and the orientation angle.
The panoramic image is acquired by a panoramic camera, a target lens is arranged on the panoramic camera, and the target lens is one of lenses of the panoramic camera.
The orientation angle is an included angle between the orientation direction of the lens of the target lens and the preset geographic direction when the panoramic camera collects the panoramic image. The lens orientation direction of the objective lens is a direction from the inside of the panoramic camera to the outside of the panoramic camera along the optical axis of the objective lens.
The panoramic image comprises a target pixel area, and the target pixel area is acquired by a target lens in the direction of the lens orientation. In other words, when the panoramic camera captures a panoramic image, the target lens captures a target pixel area along the optical axis of the target lens.
Optionally, in an embodiment of the present invention, the preset geographic direction is a true north direction, and the orientation angle is recorded on the panoramic image.
In a specific implementation, the panoramic camera is provided with a magnetometer for identifying the due north direction. Therefore, the north orientation can be determined by the panoramic camera through the magnetometer, so that when the panoramic camera collects panoramic images, the panoramic camera can determine the included angle between the lens orientation direction of the target lens and the north orientation, and the orientation angle is obtained.
For example, the photographer controls the panoramic camera to capture a panoramic image, and the panoramic camera can determine an angle between the lens orientation direction of the target lens and the due north direction when capturing the panoramic image, with the angle as an orientation angle. Then, the orientation angle is recorded on the panoramic image. The panoramic camera sends the panoramic image to the playing device, so that the playing device obtains the panoramic image recorded with the orientation angle. In a specific example, the panoramic image includes a gps idgdirection attribute and a position headingdepth attribute, which are used to record the orientation angle. GPSImgDiction and PoseHeadingDegrid are attribute names. The playback device may read the orientation angle from the panoramic image.
Step 702: and converting the panoramic image into a panoramic spherical image under a three-dimensional coordinate system.
And after the playing equipment acquires the panoramic image, converting the panoramic image into a panoramic spherical image under a three-dimensional coordinate system.
The panoramic image is a two-dimensional image, the panoramic spherical image is a three-dimensional image, and the panoramic image can be converted into the panoramic spherical image under a three-dimensional coordinate system through algorithm conversion. The panoramic spherical image is of a spherical structure. Alternatively, the panoramic spherical image may be projected onto a plane, resulting in a panoramic image, for example using equidistant rectangular projections. In other words, the panoramic image and the panoramic spherical image are representations of the same image in different coordinate systems.
Step 703: and arranging a virtual camera at the sphere center of the panoramic spherical image.
As shown in fig. 8 and 9, the playback apparatus sets a virtual camera 802 at the center of the sphere of the panoramic spherical image 801. Virtual camera 802 is used to capture images and functions similar to a camera.
Step 704: and acquiring a first watching image positioned in the visual field range of the virtual camera from the panoramic spherical image through the virtual camera.
The virtual camera has a field angle, the field angle is the field range of the virtual camera, and the virtual camera can acquire information in the field range. As shown in fig. 8 and 9, the virtual camera 802 generates a view range, the view range of the virtual camera 802 intersects with the panoramic spherical image 801, an area on the panoramic spherical image 801 that intersects with the view range of the virtual camera 802 is a first viewing image 803, and the virtual camera 802 can capture the first viewing image 803, so that the playback device determines the first viewing image. Fig. 8 and 9 show images captured by the virtual camera 802, fig. 8 is a schematic plan view, and fig. 9 is a schematic perspective view.
Through the method, the first watching image is determined from the panoramic image. The first watching image is a local part of the panoramic image, and the target pixel area is on the first watching image.
It should be understood that steps 702 to 704 are one of the specific ways of determining the first-view image from the panoramic image.
Step 705: a first viewing image is presented in a player window.
The playback device determines a first viewing image that may be rendered in a player window for viewing by a user. At this time, the target pixel region is located at the center of the player window.
It should be appreciated that the virtual camera may capture a first viewing image that the user views through the player window, and thus, the field of view of the virtual camera may represent the field of view of the user. Along the optical axis of the virtual camera, the direction from the inside of the virtual camera to the outside of the virtual camera is the view direction, and is also the direction indicated by the view direction icon. In other words, in the embodiment of the present invention, the direction indicated by the visual field direction icon represents a direction that points from the inside of the virtual camera to the outside of the virtual camera along the optical axis of the virtual camera.
Step 706: a compass icon is drawn in the player window.
The playing device draws a compass icon in the player window. The compass icons comprise center points, visual field direction icons and preset geographical direction icons, and the visual field direction icons and the preset geographical direction icons are all the outer parts pointing to the compass icons from the center points so as to represent directions. The preset geographical direction icon represents a preset geographical direction.
An included angle between the view direction icon and the preset geographical direction icon is equal to an orientation angle, and at the moment, the view direction icon can represent a lens orientation direction of the target lens and also represent a view direction of a user when viewing the first viewing image.
Therefore, when the user views the first viewing image, the field of view direction icon reflects the current field of view direction of the user in the compass icon, the preset geographical direction icon can be used for position positioning due to the fact that the preset geographical direction icon represents the preset geographical direction, therefore, the specific position of the current field of view direction of the user can be determined through the included angle between the field of view direction icon and the preset geographical direction icon, the user can determine the relative position of the currently viewed first viewing image in the panoramic image through viewing the compass icon, and the user can conveniently view the panoramic image.
There are various specific implementations of the compass icon, and in one specific implementation, compass icon 1001 is circular in shape, as shown in FIG. 10. Compass icon 1001 also includes a target sector area 1002, the apex of target sector area 1002 coinciding with a center point 1003, the arc of target sector area 1002 lying on the circumference of compass icon 1001.
The compass icon also includes a preset geographic identifier. The direction pointing from the center point to the preset geographical indication represents the direction indicated by the preset geographical direction icon. Along the center line of the target sector area, the direction pointing from the center point to the outside of the compass icon represents the direction indicated by the sight direction icon.
For example, as shown in fig. 10, compass icon 1001 is circular in shape, and the center of compass icon 1001 is center point 1003. On the compass icon 1001, a geographical indication 1004 is preset as a "north" word and a triangular indication adjacent to the "north" word. Pointing to "north" from the center of compass icon 1001 and the triangular designation indicates the true north direction. Along the center line of the target fan area 1002, a direction pointing from the center of the compass icon 1001 to the outside of the compass icon 1001 represents a direction indicated by the sight direction icon. The center of the circle and the "north" and triangular labels of compass icon 1001 represent the preset geographical direction icon 1004 and the center line of the target sector area 1002 represents the view direction icon. The directions pointing from the center of the compass icon 1001 to "north" and the triangular sign and the direction pointing from the center of the compass icon to the outside of the compass icon along the center line of the target sector area, the angle between the two directions being the heading angle.
Step 707: and when the rotation instruction is detected, rotating the virtual camera in the three-dimensional coordinate system according to the target rotation angle indicated by the rotation instruction.
When the rotation instruction is detected, the playing equipment rotates the virtual camera under the three-dimensional coordinate system according to the target rotation angle indicated by the rotation instruction so as to adjust the image of the panoramic spherical image in the visual field range of the virtual camera. Because of the virtual camera rotation, the orientation of the visual field range of the virtual camera changes, and therefore the image of the panoramic spherical image in the visual field range of the virtual camera changes.
There are various specific implementations of the rotation instruction, and in one specific implementation, the rotation instruction is a drag operation on the panoramic image in the player window. For example, the user controls the mouse, moves a mouse cursor into the player window, and drags the panoramic image in the player window by the mouse cursor, thereby generating the target rotation angle. Or in the touch screen, the user can drag the panoramic image in the player window by clicking and sliding on the touch screen.
Step 708: and determining the target sub-angle according to the target rotation angle.
And the playing equipment determines the target sub-angle according to the target rotation angle.
Specifically, the target rotation angle is represented by three attitude angles that rotate about different axes that are perpendicular to each other. The target sub-angle is one of three attitude angles of the target rotation angle, and the target sub-angle rotates around the target reference axis.
The target reference axis is an axis in space, and is perpendicular to the optical axis of the virtual camera and the preset geographic direction when the player window displays the first viewing image in the three-dimensional coordinate system. When the virtual camera is rotated, the position of the target reference axis is fixed. Therefore, the target sub-angle can reflect the rotation angle of the virtual camera on the plane where the lens orientation direction of the target lens and the preset geographic direction are located.
Step 709: and acquiring a second watching image positioned in the visual field range of the virtual camera from the panoramic spherical image through the virtual camera.
After the virtual camera rotates, the direction of the visual field range of the virtual camera also changes, so that images in the visual field range of the virtual camera on the panoramic spherical image are different, and at the moment, the playing equipment collects a second watching image in the visual field range of the virtual camera from the panoramic spherical image through the virtual camera. The second viewed image is a part of the panoramic image, and the first viewed image and the second viewed image are different parts of the panoramic image. Specific implementation principles can be referred to the specific description of step 704.
Step 710: the second viewing image is presented in the player window.
After the playing device determines the second viewing image, the second viewing image may be rendered in the player window for viewing by the user.
In this way, after the compass icon is drawn in the player window, through steps 707 to 710, it is realized that when the rotation instruction is detected, the panoramic image is moved in the player window according to the target turning angle indicated by the rotation instruction, so that the player window shows the second viewing image. Wherein the second viewing image is a local portion of the panoramic image.
It should be understood that steps 707 to 710 are one of specific implementations of the step of moving the panoramic image in the player window according to the target rotation angle indicated by the rotation instruction when the rotation instruction is detected, so that the player window displays the second viewing image.
Step 711: and on the compass icon, rotating the view direction icon by a target sub-angle around the central point.
The panoramic image displayed by the player window is locally different, and the view direction is often changed relative to the preset geographic direction when the image displayed by the player window is watched. On the compass icon, the playback device turns the sight direction icon by a target angle around the center point so that the direction indicated by the sight direction icon represents the sight direction when viewing the second viewing image. Thus, real-time display of the currently viewed viewing direction is achieved.
As shown in fig. 5, fig. 5 shows an example of a compass icon 402 when the first-view image is presented in the player window. After the panoramic image is moved in the player window to make the player window display the second viewing image, on the compass icon 402, the view direction icon 404 is rotated around the center point 403 of the compass icon 402, so that the view direction icon 404 is rotated around the center point 403 by a target angle, resulting in the compass icon shown in fig. 6.
In summary, in the method for viewing a panoramic image according to the embodiment of the present invention, a panoramic image and an orientation angle are obtained, where the panoramic image is acquired by a panoramic camera, the panoramic camera is provided with a target lens, the orientation angle is an included angle between a lens orientation direction of the target lens and a preset geographic direction when the panoramic image is acquired by the panoramic camera, the panoramic image includes a target pixel area, and the target pixel area is acquired by the target lens in the lens orientation direction. Then, from the panoramic image, a first view image is determined, the first view image being a local part of the panoramic image, the target pixel area being on the first view image. The first viewing image is presented in the player window so that the user can view the first viewing image, with the target pixel region being located at the center of the player window. Drawing a compass icon in the player window, wherein the compass icon comprises a central point, a view direction icon and a preset geographical direction icon, the view direction icon and the preset geographical direction icon are both the outside of the compass icon pointed from the central point, an included angle between the view direction icon and the preset geographical direction icon is equal to an orientation angle, and the preset geographical direction icon represents a preset geographical direction. Therefore, when the user views the first viewed image, the field of view direction icon reflects the current field of view direction of the user in the compass icon, and the specific position of the current field of view direction of the user can be determined by the included angle between the field of view direction icon and the preset geographical direction icon, so that the user can determine the specific position of the current viewed image in the player window in the panoramic image, and the user can conveniently view the panoramic image.
Fig. 11 is a schematic structural diagram of a playing device according to an embodiment of the present invention. The playback apparatus of the embodiment shown in fig. 11 may be used to perform the method of viewing panoramic images of the embodiments shown in fig. 3 and 7.
Referring to fig. 11, the playback device according to the embodiment of the present invention includes:
the panoramic image acquisition unit 1101 is used for acquiring a panoramic image and an orientation angle, wherein the panoramic image is acquired by a panoramic camera, the panoramic camera is provided with a target lens, the orientation angle is an included angle between the orientation direction of the lens of the target lens and a preset geographic direction when the panoramic camera acquires the panoramic image, the panoramic image comprises a target pixel area, and the target pixel area is acquired by the target lens in the orientation direction of the lens;
a determining unit 1102, configured to determine a first viewing image from the panoramic image, where the first viewing image is a local part of the panoramic image, and the target pixel area is on the first viewing image;
a presentation unit 1103 configured to present the first viewing image in a player window, where the target pixel region is located at a center of the player window;
the drawing unit 1104 is configured to draw a compass icon in the player window, where the compass icon includes a center point, a view direction icon and a preset geographical direction icon, the view direction icon and the preset geographical direction icon both point to the outside of the compass icon from the center point, an included angle between the view direction icon and the preset geographical direction icon is equal to an orientation angle, and the preset geographical direction icon represents a preset geographical direction.
Optionally, the playback device further includes a detection unit 1105 and a rotation unit 1106;
a detecting unit 1105, configured to, when a rotation instruction is detected, move the panoramic image in the player window according to the target rotation angle indicated by the rotation instruction, so that the player window displays a second viewing image, where the second viewing image is a local part of the panoramic image;
a rotating unit 1106, configured to rotate the view direction icon by the target sub-angle around the central point on the compass icon, so that the direction indicated by the view direction icon represents the view direction when the second viewing image is viewed.
Optionally, the determining unit 1102 includes:
the conversion module 1107 is configured to convert the panoramic image into a panoramic spherical image in a three-dimensional coordinate system;
a setting module 1108, configured to set a virtual camera at a center of a sphere of the panoramic spherical image;
and the acquisition module 1109 is configured to acquire, through the virtual camera, a first viewing image located within a visual field range of the virtual camera from the panoramic spherical image.
Optionally, the detection unit 1105 includes a rotation module 1110 and an angle determination module 1111;
a rotating module 1110, configured to, when a rotation instruction is detected, rotate the virtual camera in the three-dimensional coordinate system according to a target rotation angle indicated by the rotation instruction, so as to adjust an image of the panoramic spherical image within a field of view of the virtual camera;
the angle determination module 1111 is configured to determine a target sub-angle according to the target rotation angle, where the target rotation angle is represented by three attitude angles, the target sub-angle is one of the three attitude angles of the target rotation angle, and the target sub-angle rotates around a target reference axis, where the target reference axis is perpendicular to an optical axis and a preset geographical direction of the virtual camera when the player window displays the first viewing image in the three-dimensional coordinate system;
the acquisition module 1109 is further configured to acquire, through the virtual camera, a second viewing image located within a visual field range of the virtual camera from the panoramic spherical image;
the displaying unit 1103 is further configured to display a second viewing image in the player window.
Alternatively, the rotation instruction is a drag operation of the panoramic image in the player window.
Optionally, the preset geographic direction is a true north direction;
the orientation angle is recorded on the panoramic image.
Optionally, the compass icon is circular in shape;
the compass icon also comprises a target fan-shaped area, the vertex of the target fan-shaped area is coincided with the central point, and the arc of the target fan-shaped area is positioned on the circumference of the compass icon;
the compass icon also comprises a preset geographic identifier;
the direction pointing to the preset geographical identification from the center point represents the direction indicated by the preset geographical direction icon;
along the center line of the target sector area, the direction pointing from the center point to the outside of the compass icon represents the direction indicated by the sight direction icon.
Optionally, the panoramic camera is provided with a magnetometer for identifying the due north direction.
In summary, in the playing device according to the embodiment of the present invention, the obtaining unit 1101 obtains a panoramic image and an orientation angle, the panoramic image is obtained by collecting the panoramic image with a panoramic camera, the panoramic camera is provided with a target lens, the orientation angle is an included angle between a lens orientation direction of the target lens and a preset geographic direction when the panoramic image is collected with the panoramic camera, the panoramic image includes a target pixel area, and the target pixel area is obtained by collecting the target lens in the lens orientation direction. From the panoramic image, the determination unit 1102 determines a first viewing image, which is a part of the panoramic image, on which the target pixel region is. The presentation unit 1103 presents the first viewing image in a player window, with a target pixel region located at the center of the player window. The drawing unit 1104 draws a compass icon in the player window, where the compass icon includes a central point, a view direction icon and a preset geographical direction icon, the view direction icon and the preset geographical direction icon both point to the outside of the compass icon from the central point, an included angle between the view direction icon and the preset geographical direction icon is equal to an orientation angle, and the preset geographical direction icon represents a preset geographical direction. Therefore, when the user views the first viewed image, the field of view direction icon reflects the current field of view direction of the user in the compass icon, and the specific position of the current field of view direction of the user can be determined by the included angle between the field of view direction icon and the preset geographical direction icon, so that the user can determine the specific position of the current viewed image in the player window in the panoramic image, and the user can conveniently view the panoramic image.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A method of viewing a panoramic image, comprising:
acquiring a panoramic image and an orientation angle, wherein the panoramic image is acquired by a panoramic camera, a target lens is arranged on the panoramic camera, the orientation angle is an included angle between the lens orientation direction of the target lens and a preset geographical direction when the panoramic camera acquires the panoramic image, the panoramic image comprises a target pixel area, and the target pixel area is acquired by the target lens in the lens orientation direction;
determining a first viewing image from the panoramic image, wherein the first viewing image is a local part of the panoramic image, and the target pixel area is on the first viewing image;
displaying the first viewing image in a player window, the target pixel region being located at a center of the player window;
drawing a compass icon in the player window, wherein the compass icon comprises a central point, a visual field direction icon and a preset geographical direction icon, the visual field direction icon and the preset geographical direction icon are all from the central point to the outside of the compass icon, an included angle between the visual field direction icon and the preset geographical direction icon is equal to the orientation angle, and the preset geographical direction icon represents the preset geographical direction.
2. The method of claim 1,
after the drawing the compass icon in the player window, the method further comprises:
when a rotation instruction is detected, moving the panoramic image in the player window according to a target rotation angle indicated by the rotation instruction, so that the player window displays a second watching image, wherein the second watching image is a local part of the panoramic image;
rotating the sight direction icon on the compass icon by a target sub-angle about the center point such that a direction indicated by the sight direction icon represents a sight direction when viewing the second viewing image.
3. The method of claim 2,
the determining a first viewing image from the panoramic image comprises:
converting the panoramic image into a panoramic spherical image under a three-dimensional coordinate system;
arranging a virtual camera at the center of the panoramic spherical image;
and acquiring a first watching image positioned in the visual field range of the virtual camera from the panoramic spherical image through the virtual camera.
4. The method of claim 3,
when a rotation instruction is detected, moving the panoramic image in the player window according to a target rotation angle indicated by the rotation instruction, so that the player window displays a second viewing image, including:
when a rotation instruction is detected, rotating the virtual camera in the three-dimensional coordinate system according to a target rotation angle indicated by the rotation instruction so as to adjust the image of the panoramic spherical image in the visual field range of the virtual camera;
determining a target sub-angle according to the target rotation angle, wherein the target rotation angle is represented by three attitude angles, the target sub-angle is one of the three attitude angles of the target rotation angle, and the target sub-angle rotates around a target reference axis, and the target reference axis is perpendicular to the optical axis of the virtual camera and the preset geographic direction when the player window displays the first viewing image in the three-dimensional coordinate system;
acquiring a second watching image positioned in the visual field range of the virtual camera from the panoramic spherical image through the virtual camera;
displaying the second viewing image in the player window.
5. The method of claim 2,
the rotation instruction is a dragging operation of the panoramic image in the player window.
6. The method of claim 1,
the preset geographic direction is the true north direction;
the orientation angle is recorded on the panoramic image.
7. The method of claim 1,
the compass icon is circular in shape;
the compass icon further comprises a target sector area, the vertex of the target sector area is coincident with the central point, and the arc of the target sector area is positioned on the circumference of the compass icon;
the compass icon further comprises a preset geographic identifier;
the direction pointing to the preset geographical identification from the central point represents the direction indicated by the preset geographical direction icon;
a direction along the center line of the target sector area pointing from the center point to the outside of the compass icon represents the direction indicated by the sight direction icon.
8. The method of claim 6,
the panoramic camera is provided with a magnetometer used for identifying the true north direction.
9. A playback device, comprising:
the panoramic image acquisition device comprises an acquisition unit, a processing unit and a display unit, wherein the acquisition unit is used for acquiring a panoramic image and an orientation angle, the panoramic image is acquired by a panoramic camera, a target lens is arranged on the panoramic camera, the orientation angle is an included angle between the lens orientation direction of the target lens and a preset geographic direction when the panoramic camera acquires the panoramic image, the panoramic image comprises a target pixel area, and the target pixel area is acquired by the target lens in the lens orientation direction;
a determining unit, configured to determine, from the panoramic image, a first viewing image, where the first viewing image is a local part of the panoramic image, and the target pixel area is on the first viewing image;
a display unit, configured to display the first viewing image in a player window, where the target pixel region is located at a center of the player window;
the drawing unit is used for drawing compass icons in the player window, the compass icons comprise a central point, field of vision direction icons and preset geographical direction icons, the field of vision direction icons and the preset geographical direction icons are all oriented from the central point to the outside of the compass icons, included angles between the field of vision direction icons and the preset geographical direction icons are equal to the orientation angles, and the preset geographical direction icons represent the preset geographical directions.
10. Player device according to claim 9,
the playing device further comprises a detection unit and a rotation unit;
the detection unit is used for moving the panoramic image in the player window according to the target rotation angle indicated by the rotation instruction when the rotation instruction is detected, so that the player window displays a second watching image, wherein the second watching image is a local part of the panoramic image;
the rotating unit is used for rotating the visual field direction icon around the central point on the compass icon by a target sub-angle, so that the direction indicated by the visual field direction icon represents the visual field direction when the second watching image is watched.
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